Archives | American Laboratory

Working Flow Rate: How to Compare Vacuum Pumps
Friday, May 17, 2013
Application Note
Peter Coffey
To compare vacuum pumps, it is imperative to look at the pumping speed at working vacuum levels. The working vacuum level is the vacuum at which you need to operate your application. Comparing the ... read more
Optimizing HPLC Sample Preparation
Monday, February 06, 2012
Technical Article
Caitlin Smith
Sample preparation is an important component for analysis in high-performance liquid chromatography (HPLC)/ultra high-performance liquid chromatography (UHPLC). This article outlines commonly used ... read more
Product Intelligence: Laboratory Vacuum Pump Buyers' Guide
Monday, July 16, 2012
Technical Article
Emily S. Tozzi
Chemistry and life science laboratories utilize lab vacuum pumps for applications such as providing suction to drive the aspiration or filtration of liquid or suspended samples, and inducing or ... read more
Analysis of Protosappanin B in Sappan Lignum by Capillary Zone Electrophoresis
Tuesday, September 23, 2014
Application Note
Luzhi Sui Xiangqian Hou Xinmin Li Dunqing Wang
Sappan Lignum, the dried heartwood of Caesalpinia sappan L, has been used as an herbal medicine since ancient times. Sappan Lignum promotes blood circulation; removes blood stasis; reduces swelling, ... read more